Can-opener.



No. 882,065. PATENTED MAR. 17, 1908.

G. J'. JOHNSON.

CAN OPENER.

APPLICATION FILED AUG. 2, 1907.

WITNESSES:

1n: NORRIS r'zn'ns co, WASHINGYON, :5. c,

CARL J. JOHNSON, OF SUNRISE, WYOMING.

CAN-OPENER.

Specification of Letters Patent.

Patented March 17, 1908.

Application filed August 2, 1907. Serial No. 386,706.

To all whom it may concern:

hBe it known that I, CARL J. JOHNSON, of Sunrise, in the county ofLaramie and State of Wyoming, have invented certain novel and usefulImprovements in Can()peners, of which the following is a full, clear,and accurate description and specification, reference being had to theaccompanying drawings, which are hereby made a part thereof.

My invention relates to improvements in that class of can openers inwhich there are two pivoted levers, or arms, and in which a blade,attached to one of the arms, is employed to cut the top of the can nearits marginal edge.

The principal objects of my invention are, to provide a simpler and morepractical implement of this class than has yet been produced; to cheapenthe cost of production of the same, so that it may be had by all; andgenerally, to so improve this class of device in its construction andoperation that it may be rendered e'llicacious and universallyavailable.

To accomplish these ends, my invention consists in certain novelfeatures of construction, and in the combination and arrangement of theparts, as hereinafter described, and set forth in the claims.

In the accompanying drawings, Figure 1 is a top view of the completedevice in operation upon the top of a can. Fig. 2 is a side view of thedevice in detail. Fig. 3 is a rear view, partly in section, showing thecutting blade in detail and the means of attachment to the remainder ofthe device.

The same figures of reference indicate the same parts in the differentviews shown.

A. is the lower arm of the device, for attachment to the can, and B. isthe upper arm.

C. is the clamp attachment of the cutting blade, and D. is the pivotholding the two arms in attachment, and permitting the free action ofarm B. turning upon it.

E. E. indicate beveled edges along a portion of arm B. to admit of theproper attachment and adjustment of clamp C.

F. is a thumb-screw passing through one side of clamp C. and designed sothat when the parts are adjusted and the screw properly tightened, theend of the said screw will strike upon the face of one of the bevelsabove its lower edge as indicated in Fig. 3, and thus hold theattachment firmly in place, the opposite beveled edge being jammedfirmly into the corresponding side of the clamp which is constructed toreceive it as shown in said Fig. 3.

G. is the cutting blade of the device, and is preferably double-edged.

H. H. etc. indicate flattened points.

Three of them depend from the lower forward face of arm A., and arearranged in the form of a triangle, one at the extreme forward end ofthe arm, forming the apex, and the other two somewhat farther back andat either side of the arm, forming the base. These latter two points areindicated in Fi 2 as one being directly behind the other. The upper armB. is also provided with a single point passing downward from D. throughand below the lower arm A. in its forward part, thus forming the meansof pivoting the two arms together, and in its (12(- tension below arm A.constituting an addi tional point depending downward. In construction,this latter point should be somewhat longer than the others mentioned.

T o operate the device, adjust the clamp and cutting blade at the properplace along arm B. to accommodate the size of can it is desired to open.The longer and central flattened point, as shown in Fig. 2 should beplaced at the center of the can top J. as shown in Fig. 1. A slight blowwill drive all the points through the can top, which will hold thedevice in place on the can. Then holding the whole firmly by arm A.carry the cutting blade through the can top around from right to left,cutting the top along line I. as shown in Fig. 1. If for any reason itis desired, arm B. may also be carried around from left to right, bysimply reversing its position at the beginning.

The device may of course be made of any size desired, and changes withinthe scope of the invention may be made without altering the principleembodied.

My claims are 1 1. In can openers, two arms pivoted together at theirforward ends, the lower arm constructed with three flattened pointsextending downward from its lower face at the forward end, arranged inthe form of a triangle, and designed to pierce the top of a can toafford a means of attaching the device to a can, and also to provide afulcrum for the lever action of the upper arm; the second and upper armbeing provided with a single point at its forward end passing throughthe forward part of the first mentioned arm and constituting a pivot,said arm having attached to and depending from it, by means of aclamping device fitted with a thumbscrew, a double edged cutting blade,de signed to be adjustable along the said arm by means of appropriatelyarranged beveled edges on the said arm, substantially as described.

2. In the construction of can openers, a

lower arm fitted With three depending fiattened points arranged in theform of a triangle on the forward lower face of the arm; an upper armwith outer edges beveled up ward along a portion of their length; aclamp attachment bearing a double edged cutting blade, and designed tobe fitted and held in firm attachment to the beveled arm by means of ascrew brought into firm contact with one of the beveled edges while theother beveled edge is jammed tight into the corresponding side of theclamp attachment CARL J. JOHNSON.

WVitnesses:

MARsHALL L. WILsoN, FRANK J. VALLAT.

